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# copysignf.m4 serial 1
dnl Copyright (C) 2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_COPYSIGNF],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
dnl Determine COPYSIGNF_LIBM.
gl_MATHFUNC([copysignf], [float], [(float, float)])
if test $gl_cv_func_copysignf_no_libm = no \
&& test $gl_cv_func_copysignf_in_libm = no; then
HAVE_COPYSIGNF=0
COPYSIGNF_LIBM=
fi
AC_SUBST([COPYSIGNF_LIBM])
])
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